{
  "$type": "site.standard.document",
  "description": "This application relates to a lithium ion secondary battery comprising a battery core and an electrolyte, wherein the battery core comprises a lithium-manganese-based positive electrode active material; the electrolyte comprises a solvent, a lithium salt and an additive comprising vinylene…",
  "path": "/patents/1359712",
  "publishedAt": "2024-02-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M4/505",
    "Contemporary Amperex Technology Co., Limited"
  ],
  "textContent": "This application relates to a lithium ion secondary battery comprising a battery core and an electrolyte, wherein the battery core comprises a lithium-manganese-based positive electrode active material; the electrolyte comprises a solvent, a lithium salt and an additive comprising vinylene carbonate; and wherein the weight percentage q of the electrolyte based on the total weight of the positive electrode active material layer in the battery core, the weight percentage r of vinylene carbonate present in the electrolyte, the compaction density s of the negative electrode active material layer in the battery core and the weight percentage p of manganese element present in the positive electrode active material satisfies 0.05≤q·r·s/p≤6, wherein the units of q, r, and p are wt %, and the unit of s is g/cm. The lithium ion secondary battery in this application has relatively high safety performance, cycle performance and storage performance.",
  "title": "LITHIUM ION SECONDARY BATTERY"
}